108 entries under noun topic. ×

12
estimate(verb, check, consider, determine)
12
guess(verb, consider, determine, reason)
9
conjecture(verb, consider, determine, reason)
8
guestimate
6
surmise(verb, consider, determine, fancy)
5
gauge(verb, check, consider, determine)
4
speculation(feeling, idea, belief, guess)
3
approximation(guess, judgment, estimate, assessment)
3
guesswork(feeling, idea, belief, guess)
3
judge(verb, check, consider, determine)
3
postulate(verb, feeling, reason, idea)
3
suppose(verb, consider, determine, fancy)
3
supposition(feeling, idea, belief, guess)
2
appraisal(measure, guess, conclusion, estimate)
2
assay(verb, check, consider, determine)
2
assessment(measure, guess, conclusion, estimate)
2
ballpark figure(expression, idiom, feeling, measure)
2
calculation(guess, estimate)
2
fancy(verb, reason, assume, think)
2
rate(verb, check, consider, determine)
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APASmart Define. (2015). guesstimate thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/guesstimate/thesaurus/synonyms
ChicagoSmart Define. 2015. "guesstimate thesaurus" https://smartdefine.org/guesstimate/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, guesstimate thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/guesstimate/thesaurus/synonyms>.
MLASmart Define. "guesstimate thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/guesstimate/thesaurus/synonyms>